I use the Mr. Glo before every shave as well.
I've tried the Neutrogena bar, the Purpose bar, the Basis bar and the Neutrogena Razor Defense Wash that was recommended my Mantic and while they are all great products, I give the edge to Mr. Glo.
Maybe it's the extra oils added in, maybe it's psychological(!) but I always seem to get superior results with Mr. Glo.

If it is indeed the extra oils that make a difference than the Dr. Bronner's mentioned above is surely a great alternative to try.